Decades after Watergate, ex-F.B.I. official W. Mark Felt has finally revealed that he was “Deep Throat,” the anonymous source who tipped the Washington Post about President Nixon’s involvement in the scandal.

As the author of FBI: An Uncensored Look Behind the Walls, a 1976 book about the organization, Goucher President Sanford J. Ungar has been a key source for newspaper, radio, and television reporters covering the “Deep Throat” revelation. Ungar was interviewed by journalists at the following outlets: